Structural changes in the medial and central amygdala of the male rat, following neonatal castration and androgen treatment.

In contrast to the lateral amygdalar region, in the medial and central parts of the amygdala a significant female-like increase of neuronal nuclear volumes was found in adult male rats orchidectomized on the 1st day of life. These permanent structural changes of the medial and central amygdala could be prevented by androgen administration on the 3rd day of life.